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MAC address does not show up on the telco's ARP table caches

 
 
dennishartman
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      10-04-2005, 07:57 PM
// __ 20050915 14:15
Hi,

I am using as ISP that uses the telephone/DSL network from the local
telco to provide their clients with broadband/DSL access (they do
provide a better/marginally cheaper service).

The thing is that I am repeatedly (and way too often) kicked off the
net in ways that even my ISP tech suppost considers to be "very
strange"

I know I am connected to the Net because if I run ethereal setting my
card on promiscuos mode (I am connecting to the Net directly), I can
see the whole traffic of what is going on on my domain. I must be a
heck of a guesser to make up an ethereal ethernet traffic log.

They have told me things like:

._ your MAC address does not show on the telco's cache.

._ your MAC does temporarily show on their ARP table cache
sometimes(?!), but as an imcomplete address

._ their ARP tables also show lots of different MAC addresses assigned
to you that are actually not yours

Also my ISP has a procedure to refresh your NIC's MAC addresses that I
have used to no avail. I have even tried using dirrent NICs on X86
boxes and even a Mac.

What could be the 'technical' reasons why this could be happening?

Thanks
dennishartman

 
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Volker Birk
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      10-04-2005, 08:33 PM
In comp.security.firewalls dennishartman <(E-Mail Removed)> wrote:
[loosing connectivity]
> What could be the 'technical' reasons why this could be happening?


This your provider must find out. This is much too less information
to help.

Yours,
VB.
--
If class libraries are compared to animals, MFC is the slime-warts toad.
 
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